Shoulder strap



FIG. 1 is a frontal, downward, rightward prospective view of the shoulder strap according to our design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings represents stitching. 

I claim the ornamental design for a shoulder strap, as shown and described. 